Cousin Bubba, according to the Elmo's World episode "Penguins," lives at the South Pole. A scarf his Granny Bird knitted for Bubba is shown draped on a penguin.
Cousin Bernie; a seagull, whom he has fish with every time they visit, as mentioned in Big Bird in Japan
Big Bird's Grandfather; an emu bird, mentioned in A Celebration of Me, Grover
Big Bird's uncle; a turkey, mentioned on his appearance on Jimmy Kimmel Live. When he was shown the Doodle of his legs and was asked if he ever "s", he replies "No, but I have an uncle turkey who gobbles."
Big Bird's cousin Robin, mentioned and seen in the song Spring is Here
Although Big Bird does know his family, in the book Big Bird's Bedtime Story, Luis tells Big Bird's back story, stating that a large egg was delivered to Hooper's Store one day, and the various residents of Sesame Street chose to build a nest for it and took care of it until it hatched. However, the story is probably not considered canon because it features a few characters who were not around when the series began (such as David and Luis).
The character was originally conceived as a kind of a yokel, it took most of the show's first season, but the writers and performers soon came to see Big Bird not as the "village idiot," but as a curious child. Spinney described him as "He was the too-big kid, much as I had been the too-little kid when I was his age. I suggested that we think of him as a child first learning to read and learning the alphabet, like our audience. That made him about 4½."[9]
As Sesame Street's core audience has gotten younger, Big Bird has aged. "He's about 6," Spinney says, "arrested at 6."[9]
They realized that Big Bird isn't the village idiot - he a child, with a wide-eyed view of the world. For a long time we played him at age 4. Now we see him as 6½ - and there he stays.
As Caroll Spinney has aged, the show has gradually started to train new performers to play Big Bird. These apprentices include both Rick Lyon in the opening theme song of the show's 20th, 25th, and 33rd seasons[11] and Matt Vogel in the show's Journey to Ernie segment. Sometimes, Matt Vogel performs in the Big Bird puppet, with Caroll Spinney dubbing all his lines in later, though Vogel has also performed the voice on occasion.
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